Rayleigh scattering of mössbauer radiation (Rsmr) data, hydration effects and glass-like dynamical model of biopolymers

V. I. Gol’Danskii, Yu F. Krupyanskii, V. N. Fleurov

Research output: Contribution to journalArticlepeer-review

Abstract

Specific features of the Rayleigh Scattering of Mössbauer Radiation (RSMR) technique in the study of biological systems are described. Experimental data show that the temperature and hydration degree are the principal parameters which influence intramolecular mobility in biopolymers. Data on temperature dependencies of elastic fraction, f, and spectrum line- shape do not fit neither Debye or Einstein models of solids nor the free diffusion in liquids and demand for their explanation a multimode approximation (i.e. a wide spectrum of correlation times, at T = 293 K from 10-6 s to 10-12-0-13 s). On the basis of RSMR, low temperature specific heat and X-ray dynamic analysis data and from the general conditions that information macromolecule must be in a non-equilibrium state (an independent confirmation of this fact comes from the kinetic model of protein folding) a glass-like dynamical model of biopolymers is formulated. A possible interpretation of RSMR data shows that fluctuatively prepared tunneling between quasiequilibrium positions (QEP) can prevail activated transitions up to a room temperature.

Original languageEnglish
Pages (from-to)527-540
Number of pages14
JournalPhysica Scripta
Volume33
Issue number6
DOIs
StatePublished - 1 Jun 1986
Externally publishedYes

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